| Weatherman Recordings Limited | Information & communication | 2021 |
| Wella USD Holdco Limited | Financial services | 2022 |
| Wellface Wimbledon Limited | Health & social care | 2021 |
| West London Motorcycles Ltd | Wholesale & retail | 2008 |
| What's HER Name Again Ltd | Other services | 2017 |
| Wheel Smart London Ltd | Wholesale & retail | 2020 |
| White Hart Lodge Management Company Limited | Households | 1994 |
| Whitfield (Surrey) Limited | | 1972 |
| Whole Bunch Wines UK Ltd | Wholesale & retail | 2022 |
| Whylearn AI Ltd | Information & communication | 2025 |
| Wild Science LAB Limited | Wholesale & retail | 2018 |
| Wimbledon (Lakeside) Cricket Ground Limited | Arts & recreation | 1974 |
| Wimbledon Autocentre Limited | Wholesale & retail | 2018 |
| Wimbledon Barbers Ltd | Other services | 2022 |
| Wimbledon Electrical Services Ltd | Manufacturing | 2024 |
| Wimbledon Guild of Social Welfare | Health & social care | 1943 |
| Wimbledon Pickleball Ltd. | Arts & recreation | 2017 |
| Wimbledon Restaurants Limited | Hospitality | 1999 |
| Wimbledon School Holiday Club Ltd | Health & social care | 2025 |
| Wimbledon Tennis Academy Limited | Arts & recreation | 2014 |
| Wimcom Limited | Professional & scientific | 2026 |
| Wines of South Africa Limited | Hospitality | 1995 |
| Wizfix Heating Ltd | Construction | 2015 |
| Wolsey Properties Limited | Administrative & support | 2001 |
| Workshop 01 Holdings Limited | Financial services | 2022 |
| Workshop 305 Community Interest Company | Education | 2009 |
| World Asia Logistics Ltd. | Transport & logistics | 1996 |
| Worldfolio Limited | Information & communication | 2003 |
| Written Mirror Ltd | Information & communication | 2015 |
| Y N M(Euro) Limited | Other services | 2015 |
| Yagnik Investments One Ltd | Real estate | 2016 |
| Yagnik Investments Two Ltd | Real estate | 2024 |
| Ygeia Medical Limited | Health & social care | 2015 |
| Ying Tian Company Limited | Real estate | 1999 |
| Yoon Global Ltd | Manufacturing | 2012 |
| Your Membership Matters Limited | Professional & scientific | 2011 |
| Your Open Sesame Ltd | Wholesale & retail | 2019 |
| YZ Superfoods Ltd | Wholesale & retail | 2025 |
| Zest Financial Consultants Limited | Financial services | 2000 |
| Ziehms & Schwartz Ltd | Professional & scientific | 2026 |